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<H1>IBM Visualization Data Explorer Programmer&#39;s Reference</H1>
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<H3><A NAME="HDRDXCICH"
HREF="progu097.htm#PToC_220">DXCreateInvalidComponentHandle</A></H3>
<A NAME="IDX1622"></A>
<A NAME="IDX1623"></A>
<P><STRONG>Function</STRONG>
<P>
Creates an invalid-component handle.
<P><STRONG>Syntax</STRONG>
<BR>
<TT><STRONG><BR>
&#35;include &lt;dx/dx.h&gt;<BR>
<P><BR>
InvalidComponentHandle DXCreateInvalidComponentHandle(Object object,<BR>
                                                      Array array, char
*name)<BR>
</STRONG></TT><BR>
<P><STRONG>Functional Details</STRONG>
<P>
The invalid-component handle is necessary in order to use the other
invalid-component routines.
<TABLE CELLPADDING="3">
<TR VALIGN="TOP"><TD><P><B><TT><STRONG>object</STRONG></TT>
</B></TD><TD><P>specifies:
<UL COMPACT>
<LI>a Field for which an invalid-component Array is to be created;
<I>or </I>
<LI>one of the following kinds of array:
"positions," "connections," "face," or "polylines."
</UL>
</TD></TR><TR VALIGN="TOP"><TD><P><B><TT><STRONG>array</STRONG></TT>
</B></TD><TD><P>allows an initial "invalid positions" or "invalid
connections" component to be passed in to initialize
the handle.
<TABLE><TR><TD ALIGN="LEFT" VALIGN="TOP"><B>Note:</B></TD><TD ALIGN="LEFT"
VALIGN="TOP">If <TT><STRONG>object</STRONG></TT> is a Field, it is not necessary
to
specify <TT><STRONG>array</STRONG></TT>, since the initial invalid
component will be found in the Field.
However, if <TT><STRONG>object</STRONG></TT> is a Field and
<TT><STRONG>array</STRONG></TT> is not
<TT><STRONG>NULL</STRONG></TT>, then
<TT><STRONG>array</STRONG></TT>
supersedes the invalid
Array in the Field.
</td></tr></table>
</TD></TR><TR VALIGN="TOP"><TD><P><B><TT><STRONG>name</STRONG></TT>
</B></TD><TD><P>Specifies the component referred to by the invalid component:
"positions," "connections.," "faces," or
"polylines."
</TD></TR></TABLE>
<P>
When you have finished using it, delete the invalid-component handle
with <TT><STRONG>DXFreeInvalidComponentHandle</STRONG></TT>.
<P><STRONG>Return Value</STRONG>
<P>
Returns the invalid-component handle or returns <TT><STRONG>NULL</STRONG></TT>
and sets an error code.
<P><STRONG>See Also</STRONG>
<P>
<TT><STRONG>
<A HREF="progu150.htm#HDRDXFICH">DXFreeInvalidComponentHandle</A>,
<A HREF="progu179.htm#HDRDXGIC">DXGetInvalidCount</A>,
<A HREF="progu206.htm#HDRDXGVC">DXGetValidCount</A>,
<A HREF="progu223.htm#HDRDXIV">DXInvertValidity</A>,
<A HREF="progu224.htm#HDRDXIEV">DXIsElementValid, DXIsElementInvalid</A>,
<A HREF="progu298.htm#HDRDXSIC">DXSaveInvalidComponent</A>,
<A HREF="progu300.htm#HDRDXSAI">DXSetAllInvalid</A>,
<A HREF="progu301.htm#HDRDXSAV">DXSetAllValid</A>,
<A HREF="progu309.htm#HDRDXSEI">DXSetElementInvalid</A>,
<A HREF="progu310.htm#HDRDXSEV">DXSetElementValid</A>
</STRONG></TT>
<P>
<A HREF="progu068.htm#HDRINVDATA">14.3 , "Invalid Data"</A>.
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